User's Manual

Page 107
NewStream User Guide and Technical Manual
A SIM card contains:
• its unique serial number [ICC ID]
• International Mobile Subscriber Identity [IMSI]
• security authentication and ciphering information
• temporary information related to the local network
• a list of the services the user has access to
• two passwords: a personal identifi cation number [PIN] for ordinary use and a
personal unblocking code [PUK] for PIN unlocking
The primary advantage of cellular wireless data is that you have access to the Internet
from any location, indoors or outdoors, throughout your carrier’s data coverage area. A
disadvantage – as is prevalent with cellular telephones – is that cellular coverage can
be attenuated in remote areas.
Figure A-6: SIM Card Sizes